Method and system for optically coupling a laser with a transducer in an energy assisted magnetic recording disk drive

a technology of energy assisted magnetic recording and laser, which is applied in the direction of recording information storage, mounting head within the housing, instruments, etc., can solve the problems of difficult alignment of laser diodes with eamr transducers, adverse effects on performance, and inability to manufacture conventional eamr disk drives at reasonable cost and sufficient optical efficiency

Active Publication Date: 2013-11-26
WESTERN DIGITAL TECH INC
View PDF19 Cites 159 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the conventional EAMR disk drive 10 may function, manufacturing the conventional EAMR disk drive 10 at an acceptable cost and with sufficient optical efficiency may be problematic.
More specifically, aligning the laser diode with the EAMR transducer 28 may be difficult.
The optical efficiency of the EAMR transducer 28 and, therefore, performance may be adversely affected.
Conversely, more closely aligning the laser diode 30 with the EAMR transducer 28 may be costly and / or time consuming.
However, this process is difficult.
Alignment may thus be time consuming, more costly and may not result in significantly improved alignment.
Manufacturability of the EAMR disk drive 10 may be adversely affected.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and system for optically coupling a laser with a transducer in an energy assisted magnetic recording disk drive
  • Method and system for optically coupling a laser with a transducer in an energy assisted magnetic recording disk drive
  • Method and system for optically coupling a laser with a transducer in an energy assisted magnetic recording disk drive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016]FIG. 3 is a diagram depicting a portion of an EAMR disk drive 100. For clarity, FIG. 3 is not to scale. For simplicity not all portions of the EAMR disk drive 100 are shown. In addition, although the disk drive 100 is depicted in the context of particular components other and / or different components may be used. In addition, although single components, such as lasers, are shown, multiple components may be used in other embodiments. Further, the arrangement of components may vary in different embodiments.

[0017]The EAMR disk drive 100 includes media (not shown) and an EAMR head 110. The EAMR head 110 includes a slider 104, EAMR transducer 112, alignment waveguide 120, optional output device 130, and laser 140 that is optically coupled with the EAMR transducer 112. In the embodiment shown, the laser 140 is a laser diode that is coupled to the submount 150. Although shown as coupled with the back side of the slider 104, the laser 140 may be located elsewhere. The laser 140 is a mu...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
energyaaaaaaaaaa
external energyaaaaaaaaaa
optical efficiencyaaaaaaaaaa
Login to view more

Abstract

A method and system for providing an energy assisted magnetic recording (EAMR) head are described. The EAMR head includes a laser, a slider, and an EAMR transducer. The laser has a main emitter and at least one alignment emitter. The slider includes at least one alignment waveguide, at least one output device, and an air-bearing surface (ABS). The alignment waveguide(s) are aligned with the alignment emitter(s). The EAMR transducer is coupled with the slider and includes a waveguide aligned with main emitter. The waveguide is for directing energy from the main emitter toward the ABS.

Description

BACKGROUND[0001]FIG. 1 depicts a side view of portion of a conventional energy assisted magnetic recording (EAMR) disk drive 10. The conventional EAMR disk drive 10 includes a recording media 12, a conventional slider 20, and a conventional laser diode 30 that are typically attached to a suspension (not shown). The conventional slider 20 has a leading edge 22, a trailing edge 26, and a back side 24. Although termed “edges”, the leading edge 22 and trailing edge 26 are surfaces of the slider 20. The leading edge 22 and trailing edge 26 are so termed because of the direction the conventional media 12 travels with respect to the EAMR transducer 28. Other components that may be part of the conventional EAMR disk drive 10 are not shown. The conventional slider 20 is typically attached to the suspension at its back side 24. A conventional EAMR transducer 22 is coupled with the slider 20.[0002]The laser diode 30 is coupled in proximity to the EAMR transducer 22. Light from an emitter (not ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(United States)
IPC IPC(8): G11B11/00
CPCG11B5/105G11B5/3166G11B5/6088G11B2005/0021Y10T29/49032Y10T29/49036
Inventor WANG, LEILEE, SHINGSOCHAVA, SERGEILEE, HYOJUNEGOULAKOV, ARKADI B.
Owner WESTERN DIGITAL TECH INC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap